SGM9128YP
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
PRODUCT DESCRIPTION
FEATURES
The SGM9128YP video filter is intended to replace

Three 6th-Order High Definition Filters
passive LC filters and drivers with an integrated device.

One 6th-Order Standard Definition Filter
Four 6th-order Butterworth filters provide improved image

Clamp Mode Active with AC-Coupled Inputs
quality compared to typical passive solutions. One

Clamp Mode Inactive with DC-Coupled Inputs
channel offers Standard Definition (SD) filter while the

AC- or DC-Coupled Outputs
other three channels are High Definition (HDi) filters.

DC-Coupled Outputs Eliminate AC Coupling Capacitors

Single Supply: 3.1V to 5.5V
The SGM9128YP offers a fixed gain of 6dB. It may be

Available in Green MSOP-10 (Exposed Pad) Package
directly driven by a DC-coupled DAC output or an

-40°C to +85°C Operating Temperature Range
AC-coupled signal. Internal clamp circuitry may be used if
AC-coupled inputs are required.
The outputs can be AC- or DC-coupled. DC coupling the
output removes the need for output coupling capacitors.
APPLICATIONS
Set-Top Boxes
SGM9128YP is available in Green MSOP-10 (Exposed
DVD Players
Pad) package. It operates over an ambient temperature
HDTV
range of -40℃ to +85℃.
Personal Video Recorders (PVR)
Video on Demand
BLOCK DIAGRAM
SD IN
Clamp
6dB
SD OUT
SD, 6th-Order
HD IN1
Clamp
6dB
HD OUT1
HD IN2
Clamp
6dB
HD OUT2
HD IN3
Clamp
6dB
HD OUT3
HDi, 6th-Order
SG Micro Corp
www.sg-micro.com
REV. A. 1
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
PACKAGE
DESCRIPTION
TEMPERATURE
RANGE
MARKING
INFORMATION
PACKAGE OPTION
SGM9128YPMS10G/TR
MSOP-10 (Exposed Pad)
-40℃ to +85℃
SGM9128YPMS10
Tape and Reel, 3000
ABSOLUTE MAXIMUM RATINGS
CAUTION
DC Supply Voltage ................................................................ 6V
Analog and Digital Input/Output Voltage
........................................................... GND - 0.3V to VCC + 0.3V
Storage Temperature Range..............................-65℃ to +150℃
This integrated circuit can be damaged by ESD if you don’t pay
attention to ESD protection. SGMICRO recommends that all
integrated circuits be handled with appropriate precautions.
Failure to observe proper handling and installation procedures
can cause damage. ESD damage can range from subtle
performance degradation to complete device failure. Precision
integrated circuits may be more susceptible to damage because
very small parametric changes could cause the device not to
meet its published specifications.
Junction Temperature ...................................................... 150℃
Operating Temperature Range ...........................-40℃ to +85℃
Lead Temperature Range (Soldering 10 sec)................... 260℃
ESD Susceptibility
HBM..................................................................................8000V
MM......................................................................................400V
NOTE:
Stresses beyond those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device. These
are stress ratings only, and functional operation of the device at
these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
SG Micro Corp
www.sg-micro.com
SGMICRO reserves the right to make any change in circuit
design, specification or other related things if necessary without
notice at any time. Please contact SGMICRO sales office to get
the latest datasheet.
2
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
PIN CONFIGURATION (TOP VIEW)
SD IN
1
10 SD OUT
VCC
2
9
GND
HD IN1
3
8
HD OUT1
HD IN2
4
7
HD OUT2
HD IN3
5
6
HD OUT3
SGM9128YP
MSOP-10 (Exposed Pad)
PIN DESCRIPTION
PIN
NAME
1
SD IN
SD Video Input.
2
VCC
Power Supply.
3
HD IN1
HD Video Input. Channel 1.
4
HD IN2
HD Video Input. Channel 2.
5
HD IN3
HD Video Input. Channel 3.
6
HD OUT3
Filtered HD Video Output. Channel 3.
7
HD OUT2
Filtered HD Video Output. Channel 2.
8
HD OUT1
Filtered HD Video Output. Channel 1.
9
GND
10
SD OUT
Exposed Paddle
—
SG Micro Corp
www.sg-micro.com
FUNCTION
Ground.
Filtered SD Video Output.
Exposed Paddle. Can only be connected to GND or left floating.
3
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
ELECTRICAL CHARACTERISTICS
(TA = +25℃, VIN = 1VPP, VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1µF; all outputs are AC-coupled with 220µF into
150Ω, referenced to 400kHz, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
5
5.5
V
65
84
mA
550
760
mV
6.1
6.35
dB
DC ELECTRICAL CHARACTERISTICS
Operating Voltage Range (VCC)
3.1
Quiescent Current (IQ)
VCC = 5.0V, No load
Output Level Shift Voltage (VOLS)
VIN = 0V, No load
Voltage Gain (AV)
RL = 150Ω
Output Voltage High Swing
VIN = 3V, RL = 150Ω to GND
4.8
V
Video Input Voltage Range
Referenced to GND if DC-coupled
1.4
VPP
Power Supply Rejection Ratio (PSRR)
DC (All channels)
50
dB
5.8
STANDARD DEFINITION ELECTRICAL CHARACTERISTICS
-0.1dB Bandwidth
SD channel
6.4
MHz
-1dB Bandwidth
SD channel
7.6
MHz
-3dB Bandwidth
SD channel
8.5
MHz
Filter Response (Normalized Gain)
SD channel, fIN = 400kHz to 27MHz
50
dB
V/μs
Slew Rate
Differential Gain (DG)
Differential Phase (DP)
2V Output step, 80% to 20%
34
AC-AC coupled, PAL/NTSC
0.9/0.5
AC-DC coupled, PAL/NTSC
0.5/0.35
AC-AC coupled, PAL/NTSC
1/0.7
AC-DC coupled, PAL/NTSC
0.7/0.6
%
deg
Group Delay Variation (D/DT)
Difference between 400kHz and 6.5MHz
30
ns
Crosstalk (channel-to-channel)
VOUT = 1.4VPP, f = 1MHz
-61
dB
Signal-to-Noise Ratio (SNR)
NTC-7 weighting, 100kHz to 5MHz
75
dB
Fall Time
2V Output step, 80% to 20%
34
ns
Rise Time
2V Output step, 80% to 20%
36
ns
Chroma Luma Gain (CLGSD)
f = 3.58MHz (Referenced to SDIN at 400kHz)
102
%
Chroma Luma Delay (CLDSD)
f = 3.58MHz (Referenced to SDIN at 400kHz)
8
ns
1080i HIGH DEFINITION ELECTRICAL CHARACTERISTICS
-0.1dB Bandwidth
RL = 150Ω
32
MHz
-1dB Bandwidth
RL = 150Ω
39
MHz
-3dB Bandwidth
RL = 150Ω
46
MHz
Filter Response (Normalized Gain)
fIN = 400kHz to 74.25MHz
23
dB
Slew Rate
2V Output step, 80% to 20%
190
V/μs
Group Delay Variation (D/DT)
Difference between 400kHz and 26MHz
2.5
ns
Crosstalk (channel-to-channel)
VOUT = 1.4VPP, f = 1MHz
-60
dB
Fall Time
2V Output step, 80% to 20%
6.2
ns
Rise Time
2V Output step, 80% to 20%
6.2
ns
SG Micro Corp
www.sg-micro.com
4
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25℃, VIN = 1VPP, VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1µF; all outputs are AC-coupled with 220µF into
150Ω, referenced to 400kHz, unless otherwise noted.
HD Gain vs. Frequency
3
0
0
Normalized Gain (dB)
Normalized Gain (dB)
SD Gain vs. Frequency
3
-3
-6
-9
-12
-3
-6
-9
-12
-15
-15
0.1
1
10
Frequency (MHz)
0.1
100
40
30
Group Delay (ns)
150
Group Delay (ns)
100
HD Group Delay vs. Frequency
SD Group Delay vs. Frequency
200
100
50
0
20
10
0
-10
-20
-50
0.1
1
10
100
Frequency (MHz)
0.1
1000
1
10
100
Frequency (MHz)
1000
HD Phase vs. Frequency
SD Phase vs. Frequency
270
270
180
180
Phase (degree)
Phase (degree)
1
10
Frequency (MHz)
90
0
-90
90
0
-90
-180
-180
-270
-270
0.1
1
10
100
Frequency (MHz)
SG Micro Corp
www.sg-micro.com
1000
0.1
1
10
100
Frequency (MHz)
1000
5
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
TYPICAL PERFORMANCE CHARACTERISTICS
TA = +25℃, VIN = 1VPP, VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1µF; all outputs are AC-coupled with 220µF into
150Ω, referenced to 400kHz, unless otherwise noted.
HD Small Signal Step Response
SD Small Signal Step Response
0.15
0.15
VIN = 0.1VPP
VIN = 0.1VPP
0.10
Output Voltage (V)
Output Voltage (V)
0.10
0.05
0.00
-0.05
-0.10
0.05
0.00
-0.05
-0.10
-0.15
-0.15
-0.2 -0.1
0
-0.2 -0.1
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time (μs)
1.00
1.00
Output Voltage (V)
Output Voltage (V)
1.50
0.00
-0.50
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time (μs)
HD Large Signal Step Response
SD Large Signal Step Response
1.50
0.50
0
0.50
0.00
-0.50
-1.00
-1.00
-1.50
-1.50
-0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time (µs)
SG Micro Corp
www.sg-micro.com
-0.2 -0.1
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Time (μs)
6
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
TYPICAL APPLICATION DIAGRAM
The following circuit may be used for direct DC-coupled drive by DACs with an output voltage range from 0V to 1.4V.
AC-coupled or DC-coupled outputs may be used with AC-coupled outputs offering slightly lower power dissipation.
+5V
0.1μF
or 0.01μF
10μF
2
0.1μF
CVBS1
VCC
1
SD IN
SD OUT
10
R1
3
Y
R2
HD OUT1
HD OUT2
HD IN2
5
R4
HD IN3
HD OUT3
GND
75Ω
220μF
75Ω
220μF
75Ω
220μF
7
R3
Pr
220μF
8
SGM9128YP
4
Pb
HD IN1
75Ω
6
CVBS1
Y
Pb
Pr
9
NOTE:
1. Power supply VCC must be sequenced on first before input video signals.
SG Micro Corp
www.sg-micro.com
7
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
APPLICATION INFORMATION
Application Circuits
The SGM9128YP video filter provides 6dB gain from input to
output. In addition, the input is slightly offset to optimize the
output driver performance. The offset is held to the minimum
required value to decrease the standing DC current into the
load.
The SGM9128YP provides an internal clamp to support
AC-coupled input signals. If the input signal does not go below
ground, the input clamp does not operate. This allows DAC
outputs to directly drive the SGM9128YP without an AC
coupling capacitor. When the input is AC-coupled, the clamp
sets the sync tip (or lowest voltage) just below ground. The
worst-case sync tip compression due to the clamp cannot
exceed 7mV. The input level set by the clamp, combined with
the internal DC offset, keeps the output within its acceptable
range.
I/O Configurations
For a DC-coupled DAC drive with DC-coupled outputs, use the
configuration in Figure 1.
DVD or
STB
SoC
DAC
Output
0V - 1.4V
LCVF
Clamp
Inactive
75Ω
Figure 1. DC-Coupled Inputs and Outputs
Alternatively, if the DAC’s average DC output level causes the
signal to exceed the range from 0V to 1.4V, it can be
AC-coupled as shown in Figure 2.
DVD or
STB
SoC
DAC
Output
0V - 1.4V
0.1µF
LCVF
Clamp
Active
75Ω
Figure 2. AC-Coupled Inputs, DC-Coupled Outputs
SG Micro Corp
www.sg-micro.com
The same circuits can be used with AC-coupled outputs if
desired.
DVD or
STB
SoC
DAC
Output
0V - 1.4V
0.1μF
LCVF
Clamp
Active
75Ω 220μF
Figure 3. AC-Coupled Inputs and Outputs
NOTE: The video tilt or line time distortion is dominated by the
AC coupling capacitor. The value may need to be increased
beyond 220μF to obtain satisfactory operation in some
applications.
Power Dissipation
The SGM9128YP output drive configuration must be
considered when calculating overall power dissipation. Care
must be taken not to exceed the maximum die junction
temperature. The following equations can be used to calculate
the power dissipation and internal temperature rise.
TJ = TA + PD • θJA
where:
PD = PCH1 + PCH2 + PCH3
2
PCHX = VCC • ICH - (VO /RL)
where:
VO = 2VIN + 0.55V
ICH = (ICC/3) + (VO/RL)
VIN = RMS value of input signal
ICC = 65mA
VCC = 5.0V
RL = channel load resistance
(1)
(2)
(3)
(4)
(5)
Board layout can also affect thermal characteristics. Refer to
the Layout Considerations section for details.
The SGM9128YP is specified to operate with output currents
typically less than 50mA, more than sufficient for a dual (75Ω)
video load. Internal amplifiers are current limited to a maximum
of 80mA and should withstand brief-duration short-circuit
conditions. This capability is not guaranteed.
8
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
APPLICATION INFORMATION
Recommended Routing/Layout Rules













Do not run analog and digital signals in parallel.
Use separate analog and digital power planes to supply
power.
Do not run traces on top of the ground plane.
Run no traces over ground/power splits.
Avoid routing at 90-degree angles.
Minimize clock and video data trace length differences.
Include 0.01μF and 0.1μF ceramic power supply bypass
capacitors.
Place the 0.1μF capacitor within 0.1 inches of the device
power pin.
Place the 0.01μF capacitor within 0.75 inches of the device
power pin.
For multi-layer boards, use a large ground plane to help
dissipate heat.
For two-layer boards, use a ground plane that extends
beyond the device body at least 0.5 inches on all sides.
Include a metal paddle under the device on the top layer.
Minimize all trace lengths to reduce series inductance.
Place a 75Ω series resistor within 0.5 inches of the output
pin to isolate the output driver from board parasitics.
SG Micro Corp
www.sg-micro.com
Thermal Considerations
Since the interior of systems such as set-top boxes, TVs and
DVD players are at +70℃, consideration must be given to
providing an adequate heat sink for the device package for
maximum heat dissipation. When designing a system board,
determine how much power each device dissipates. Ensure that
devices of high power are not placed in the same location, such
as directly above (top plane) or below (bottom plane) each other
on the PCB.
PCB Thermal Layout Considerations







Understand the system power requirements and
environmental conditions.
Maximize thermal performance of the PCB.
Consider using 70μm of copper for high-power designs.
Make the PCB as thin as possible by reducing FR4
thickness.
Use vias in the power pad to tie adjacent layers together.
Remember that baseline temperature is a function of board
area, not copper thickness.
Consider modeling techniques a first-order approximation.
9
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
PACKAGE OUTLINE DIMENSIONS
MSOP-10 (Exposed Pad)
D1
1.80
E1
E
1.55
E2
4.8
1.02
b
e
0.5
0.3
RECOMMENDED LAND PATTERN (Unit: mm)
D
L
A
θ
c
A1
A2
Symbol
Dimensions
In Millimeters
MIN
MAX
Dimensions
In Inches
MIN
MAX
A
0.820
1.100
0.032
0.043
A1
0.020
0.150
0.001
0.006
A2
0.750
0.950
0.030
0.037
b
0.180
0.280
0.007
0.011
c
0.090
0.230
0.004
0.009
D
2.900
3.100
0.114
0.122
D1
1.700
1.900
0.067
0.075
E
2.900
3.100
0.114
0.122
E1
4.750
5.050
0.187
0.199
E2
1.450
1.650
0.057
0.065
e
0.500 BSC
0.020 BSC
L
0.400
0.800
0.016
0.031
θ
0°
6°
0°
6°
SG Micro Corp
www.sg-micro.com
10
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
TAPE AND REEL INFORMATION
REEL DIMENSIONS
TAPE DIMENSIONS
P2
W
P0
Q1
Q2
Q1
Q2
Q1
Q2
Q3
Q4
Q3
Q4
Q3
Q4
B0
Reel Diameter
P1
A0
K0
DIRECTION OF FEED
Reel Width (W1)
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF TAPE AND REEL
Package Type
Reel Diameter
Reel Width
W1
(mm)
A0
(mm)
B0
(mm)
K0
(mm)
P0
(mm)
P1
(mm)
P2
(mm)
W
(mm)
Pin1
Quadrant
MSOP-10
(Exposed Pad)
13″
12.4
5.2
3.3
1.2
4.0
8.0
2.0
12.0
Q1
SG Micro Corp
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11
4-Channel, 6th-Order Video
Filter Driver for SD/HD (1080i)
SGM9128YP
CARTON BOX DIMENSIONS
NOTE: The picture is only for reference. Please make the object as the standard.
KEY PARAMETER LIST OF CARTON BOX
Reel Type
Length
(mm)
Width
(mm)
Height
(mm)
Pizza/Carton
13″
386
280
370
5
SG Micro Corp
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12